High performance lignin-acrylonitrile polymer blend materials
AssigneeUT-Battelle, LLC
InventorsAmit K. Naskar, Chau D. Tran
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Abstract
A polymer blend material comprising: (i) a lignin component having a weight-average molecular weight of up to 1,000,000 g/mol; and (ii) an acrylonitrile-containing copolymer rubber component comprising acrylonitrile units in combination with diene monomer units, and having an acrylonitrile content of at least 20 mol %; wherein said lignin component is present in an amount of at least 5 wt % and up to about 95 wt % by total weight of components (i) and (ii); and said polymer blend material possesses a tensile yield stress of at least 5 MPa, or a tensile stress of at least 5 MPa at 10% elongation, or a tensile stress of at least 5 MPa at 100% elongation. Methods for producing the polymer blend, molded forms thereof, and articles thereof, are also described.
Claims38
A polymer blend material comprising:
- (i) a lignin component having a weight-average molecular weight of up to 1,000,000 g/mol;
- and
- (ii) an acrylonitrile-containing copolymer rubber component comprising acrylonitrile units in combination with diene monomer units, and having an acrylonitrile content of at least 20 mol %;
- wherein said lignin component is present in an amount of at least 5 wt % and up to about 95 wt % by total weight of components (i) and (ii);
- wherein said polymer blend material excludes a modifying agent selected from carbon particles, ether-containing polymers, and Lewis acid compounds;
- and
- said polymer blend material possesses either a tensile yield stress of at least 5 MPa, or a tensile stress of at least 5 MPa at 10% elongation, or a tensile stress of at least 5 MPa at 100% elongation.
A method for producing a polymer blend material, the method comprising homogeneously blending a mixture comprising:
- (i) a lignin component having a weight-average molecular weight of up to 1,000,000 g/mol;
- and
- (ii) an acrylonitrile-containing copolymer rubber component comprising acrylonitrile units in combination with diene monomer units, and having an acrylonitrile content of at least 20 mol %;
- wherein said blending is conducted at a temperature of at least 100° C. and up to 200° C., at a shear rate of about 10 to 1000 s−1, and for a time of about 5 to 45 minutes;
- wherein said lignin component is present in an amount of at least 5 wt % and up to about 95 wt % by total weight of components (i) and (ii);
- wherein said mixture and resulting polymer blend material exclude a modifying agent selected from carbon particles, silicon-containing particles, ether-containing polymers, and Lewis acid compounds;
- and
- said polymer blend material possesses either a tensile yield stress of at least 5 MPa, or a tensile stress of at least 5 MPa at 10% elongation, or a tensile stress of at least 5 MPa at 100% elongation.
Dependencies are inferred from the claim text.